Viser treff 961-980 av 5380

    • Operativ risiko i HEMS 

      Johansen, Torstein (Mastergradsoppgave; Master thesis, 2023-05-24)
      HEMS – helicopter emergency medical services – omtales i dagligtale ofte som helikopter luftambulanse. Dagens operatør Norsk Luftambulanse helikopter AS opererer alle luftambulanse helikopterbaser i Norge. Denne masteroppgaven har operativ risiko i HEMS som tema. En datainnsamling ble foretatt via elektronisk spørreskjema til samtlige operative piloter og HEMS crew members (HCM) innen HEMS i Norge, ...
    • From Waste to Value: A Practical Framework for Waste Identification and Mitigation Using Lean Management Principles 

      Barabadi, Abbas; Nouri, Ali (Chapter; Bokkapittel, 2023)
      In the complex and fast-changing marketing environment, there is a constant need to reduce costs and enhance the performance of production systems. The cost-cutting strategies need to consider the long-term effect on the company. For example, the layoff may reduce the cost in the short term, but in the long term, it may significantly affect employees' psychological safety and increase human error. ...
    • Predictive Modeling for Fair and Efficient Transaction Inclusion in Proof-of-Work Blockchain Systems 

      Tedeschi, Enrico (Doctoral thesis; Doktorgradsavhandling, 2023-10-02)
      This dissertation investigates the strategic integration of Proof-of-Work(PoW)-based blockchains and ML models to improve transaction inclusion, and consequently molding transaction fees, for clients using cryptocurrencies such as Bitcoin. The research begins with an in-depth exploration of the Bitcoin fee market, focusing on the interdependence between users and miners, and the emergence of a fee ...
    • Methods for enhanced learning using wearable technologies. A study of the maritime sector 

      Xue, Hui (Doctoral thesis; Doktorgradsavhandling, 2023-10-04)
      Maritime safety is a critical concern due to the potential for serious consequences or accidents for the crew, passengers, environment, and assets resulting from navigation errors or unsafe acts. Traditional training methods face challenges in the rapidly evolving maritime industry, and innovative training methods are being explored. This study explores the use of wearable sensors with biosignal ...
    • Postural Stability Variables for Dynamic Equilibrium 

      Dutt-Mazumder, Aviroop; Dhar, Sushmit; Dutt-Mazumder, Courtney (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
      Experiments on the maintenance of postural stability on flat stationary support surfaces (quiet standing) that show only limited modes of the potential configurations of balance stability have dominated investigations of balance in quiet upright standing. Recent studies have revealed coordination properties of the whole body in maintaining dynamic postural stability with the application of moving ...
    • Mind the gap – Relevant design for laboratory oil exposure of fish as informed by a numerical impact assessment model 

      Frøysa, Håvard Guldbrandsen; Nepstad, Raymond; Meier, Sonnich; Donald, Carey; Sørhus, Elin; Bockwoldt, Mathias; Carroll, JoLynn; Vikebø, Frode Bendiksen (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-09)
      Laboratory experiments provide knowledge of species-specific effects thresholds that are used to parameterize impact assessment models of oil contamination on marine ecosystems. Such experiments typically place individuals of species and life stages in tanks with different contaminant concentrations. Exposure concentrations are usually fixed, and the individuals experience a shock treatment being ...
    • Seismicity of the western-Svalbard margin and its relationship with near surface fluid flow and seepage systems - A study using ocean bottom seismometers 

      Domel, Przemyslaw (Doctoral thesis; Doktorgradsavhandling, 2023-09-28)
      Methane, a high potential greenhouse gas, travels as a fluid and releases as a gas in large quantities from the seafloor. This seepage impacts marine ecosystems and in specific cases, it has potential to reach the atmosphere, and therefore affect the climate. Gas seepage is documented worldwide, but there are still large unknowns regarding seepage dynamics, faulting/fracturing of the sediments and ...
    • Alignment of Multifrequency SAR Images Acquired over Sea Ice Using Drift Compensation 

      Demchev, Denis; Eriksson, Leif E.B.; Hildeman, Anders; Dierking, Wolfgang Fritz Otto (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-07)
      In this article, we investigate the feasibility to align synthetic aperture radar (SAR) imagery based on a compensation for sea ice drift occurring between temporally shifted image acquisitions. The image alignment is a requirement for improving sea ice classification by combining multifrequency SAR images acquired at different times. Images obtained at different radar frequencies provide ...
    • Hvordan skape mening av det usynlige - Et teoretisk rammeverk for sensemaking under dataangrep 

      Bjøru, Einar Lohne (Master thesis; Mastergradsoppgave, 2023-05-31)
      Dataangrep er en økende trussel blant organisasjoner og virksomheter i Norge. Et ekstra element i dette er at trusselen er vanskelig å se og forstå for aktører som ikke er utdannet eller har kompetanse på det tekniske fagfeltet. Problemstillingen for denne studien tar for seg hva som er viktig for at offentlige organisasjoner skal kunne forstå og formidle omstendighetene under et dataangrep. Studien ...
    • Cross-Domain Transfer Learning for Natural Scene Classification of Remote-Sensing Imagery 

      Akhtar, Muhammad; Murtza, Iqbal; Adnan, Muhammad; Saadia, Ayesha (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-05)
      Natural scene classification, which has potential applications in precision agriculture, environmental monitoring, and disaster management, poses significant challenges due to variations in the spatial resolution, spectral resolution, texture, and size of remotely sensed images of natural scenes on Earth. For such challenging problems, deep-learning-based algorithms have demonstrated amazing ...
    • Effect of caffeine and other xanthines on liver sinusoidal endothelial cell ultrastructure 

      Mao, Hong; Szafranska, Karolina; Kruse, Larissa Dorothea; Holte, Christopher Florian; Wolfson, Deanna; Ahluwalia, Balpreet Singh; Whitchurch, Cynthia B.; Cole, Louise; Lockwood, Glen P.; Diekmann, Robin; Le Couteur, David; Cogger, Victoria C.; McCourt, Peter Anthony (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-17)
      Xanthines such as caffeine and theobromine are among the most consumed psychoactive stimulants in the world, either as natural components of cofee, tea and chocolate, or as added ingredients. The present study assessed if xanthines affect liver sinusoidal endothelial cells (LSEC). Cultured primary rat LSEC were challenged with xanthines at concentrations typically obtained from normal consumption of ...
    • Perspectives on the economic and political history of the Ross Sea 

      Basberg, Bjørn; Lintott, Bryan John (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-07)
      The paper analyses the economic and political history of the Ross Sea, where exploration, science, commercial exploitation, politics and adventure became highly interlinked and interwoven. Expedition accounts and the extensive literature on Antarctic history and politics inform the contextual aspects. The archives of the Norwegian whaling company A/S Rosshavet, established in 1923, and the ...
    • Impacts of offshore oil spill accidents on island bird communities: A test run study around Orkney and Svalbard archipelagos 

      Pavlov, Victor; James, Neil A.; Masden, Elizabeth A.; de Aguiar, Victor; Hole, Lars Robert; Liimatainen, Henrikki; Pongrácz, Eva (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-15)
      The sea area around the Orkney archipelago, Scotland is subjected to substantial maritime shipping activities. By contract, the Svalbard archipelago, Norway currently has a rather low marine traffic profile. Future projections, however, indicate that the Trans-Arctic route might change the whole transportation picture and Svalbard may be at the centre of maritime activities. Both archipelagos ...
    • Geochronology and chemostratigraphy of the 2.47–1.96 Ga rift-related volcano-sedimentary succession in the Karasjok Greenstone Belt, northern Norway, and its regional correlation within the Fennoscandian Shield 

      Hansen, Harald; Slagstad, Trond; Bergh, Steffen Gunnar; Bekker, Andrey (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-09)
      New geochronological data for the amphibolite-facies volcano-sedimentary Karasjok Greenstone Belt in northwestern Fennoscandia bracket its age between 2.47 and 1.96 Ga. The volcano-sedimentary units were deposited on the 3005 24 to 2776 69 Ma crystalline basement rocks of the Jergul Gneiss Complex. The lowermost Vuomegielas Formation contains rhyodacites dated at 2469 12 Ma that were deposited in ...
    • Laplace transformation of Lie class ω = 1 overdetermined systems 

      Kruglikov, Boris (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-20)
      In this paper, we investigate overdetermined systems of scalar PDEs on the plane with one common characteristic, whose general solution depends on one function of one variable. We describe linearization of such systems and their integration via Laplace transformation, relating this to Lie's integration theorem and formal theory of PDEs.
    • A Methodological Framework for the Resilience Analysis of Road Transport Networks Exposed to Freezing Rain 

      Ashrafi, Behrooz; Naseri, Masoud; Di Maio, Francesco P.; Zio, Enrico (Conference object; Konferansebidrag, 2022)
      Road transport network is one of the major critical infrastructures to be maintained resilient, since its disruption would not only have direct economic consequences, but it could also lead to domino effects on other critical infrastructures. This study proposes a methodological framework for the analysis of the resilience of road transport networks exposed to natural hazards, in particular to ...
    • Data Analysis Techniques for Smart Nudging 

      Dhanasekaran, Seshathiri; Andersen, Anders; Karlsen, Randi; Håkansson, Anne (Conference object; Konferansebidrag, 2021)
      <p>Nudge principles and techniques are significant in communications, marketing, and groups’ motivation to improve personal health, wealth, and well-being. We make numerous decisions in online situations. People’s health and well-being have garnered widespread interest and concern in this wearable’s age. Smart nudging is defined as “digital nudging, where the guidance of user behavior is tailored ...
    • Resilience of a transportation network: Importance of vulnerable nodes 

      Ashrafi, Behrooz; Naseri, Masoud; Barabady, Javad (Conference object; Konferansebidrag, 2022)
      Transportation Infrastructure is one of key critical infrastructures which are crucial for a wellfunctioning modern society. This study proposes a resilience-oriented framework for analyzing and ultimately mitigating risk and improving resilience for land transportation networks with a focus on vulnerable nodes. The framework uses network theory and considers the concept of independent pathways, ...
    • UX-based personalization of timed media experiences 

      Arntzen, Ingar M; Borch, Njål Trygve (Conference object; Konferansebidrag, 2021)
      A client-side approach brings great opportunities for flexible personalization of timed media experiences. This, turns it into a challenge of UX development. However, UX development does not support time-driven rendering or shared interactivity, which are required by media related scenarios. Moreover, UX development is already quite complicated, so adding support for timed rendering and shared ...
    • Outlier classification using Autoencoders: applications for fluctuation driven flows in fusion plasmas 

      Kube, Ralph; Bianchi, Filippo Maria; LaBombard, Brian; Brunner, Dan (Conference object; Konferansebidrag, 2018)